Table 2.

Subgroup analysis for the prevalence of oral frailty.

Subgroup	Number of included studies	Prevalence (%)	95%CI	I 2	p-value
Study setting
Non-community	4	56	0.34, 0.77	99	<0.01
Community	18	27	0.20, 0.35	99	<0.01
Study sample
<1,000	16	34	0.23, 0.46	99	<0.01
≥1,000	6	26	0.19,0.34	99	<0.01
Study design
Cross-sectional	16	34	0.24, 0.46	99	<0.01
Prospective	6	26	0.16,0.38	99	<0.01
Evaluation instruments
OROAG	1	26	0.22, 0.30	–	–
OFI-8	2	54	0.49, 0.60	0	0.77
OF-5	2	38	0.36, 0.41	54	0.14
Other items	17	29	0.20, 0.40	99	<0.01